Amusingly Convincing
A friend of mine was born without arms, just long fingery things.

So he dressed up as an industrial accident. Construction worker clothing and a hard hat. Then shorten and shred the sleeves and soak them in fake blood. Very hard to see his fingery things in under all that mess, they extend no more than 30cm or so from his shoulders.

Costume was indeed a bad taste hit and pretty convincing.

How convincing? He was a bit pissed, wobbling home when a passing ambulance screeched to a halt next to him and he was mobbed by rather alarmed paramedics. As he was a bit pissed it took him a while to explain that it is perfectly OK for him to be getting about without arms and that he was not merely in shock.

Then there was the time in 2002 I dressed up as the World Trade Center, one tower on each shoulder with an airplane stuck in one and jelly babies jumping out of the windows.
(xixax, Sat 2 Nov 2013, 11:35, 10 replies)

I am massively disappointed that this didn't resolve into some kind of convoluted pun.

( Amorous Badger NAKED BEA ARTHUR PHOTOS 4U, Sat 2 Nov 2013, 11:45, closed)

I figured I'd keep the puns at arms length.
(xixax, Sat 2 Nov 2013, 11:55, closed)

many jelly babies suffered that day

( Smash Monkey lowering the tone of the whole internet, Sat 2 Nov 2013, 12:49, closed)

JEWLLY BABIES DID 911! WAKE UP SHEEPLE!

( stuj (^(^;;^)^) GO TEAM SPIDERS!(^(^;;^)^), Sat 2 Nov 2013, 19:59, closed)

is it a coincidence
that there are 2 l's in jelly AND 2 l's in allah? I THINK NOT!
( Smash Monkey lowering the tone of the whole internet, Sun 3 Nov 2013, 18:58, closed)

I think the greatest bad taste would be to go as a Terrorist-themed Jenga set.
(Carpe Cyprinidae, Sat 2 Nov 2013, 12:58, closed)

I kinda like that idea!
I know of a bar in Cincinnati that has a huge Jenga set out on the patio. Maybe players should be required to push out the pieces with plastic jets?
( The Resident Loon Not a demographic. Do not measure., Sat 2 Nov 2013, 14:10, closed)

visit, taking many self-adhesive windows and adhesive-backed lego minifigs with you.

And use a real model plane
(Carpe Cyprinidae, Sat 2 Nov 2013, 17:53, closed)

Cunt should have gone as a sea lion.

( Dr. Shambolic je suis charlie, Sat 2 Nov 2013, 18:14, closed)

A wetsuit, wetsuit hood and a pair of flippers. Sorted.
( Ken Oath, Sun 3 Nov 2013, 9:42, closed)